Dewetron DEWE3-M4, Technical Reference Manual

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connectionS and PortS
17
DEWE3-M4 • Technical reference • Printing version 1.0.1 • August 25, 2022
Digital I/O connector
10
11
12
13
9
4
5
6
7
8
1
2
3
22
23
24
25
21
16
17
18
19
20
14
15
GND
GND
GND
DO3
DO1
DI8
DI7
DI6
DI5
DI4
DI3
DI2
DI1
GND
GND
GND
GND
GND
GND
GND
GND
DO4
DO2
AUX output
AUX output
12 V max. 600 mA
CNT4 input A
CNT3 input A
CNT2 input Z
CNT2 input B
CNT2 input A
CNT1 input Z
CNT1 input B
CNT1 input A
IRIG/PPS input
Power GND Digital output IRIG/PPS input Counter input Digital input
Fig. 7: Pin assignment D-SUB-25 connector
NOTICE
Combined load at D-SUB-9 socket CAN and D-SUB-25 socket digital I/O max. 600 mA at 12 V.
Digital I/O connector specifications
Digit
al IN
Digital input 8 CMOS/TTL compatible digital inputs; weak pull-up via 100 kΩ
Overvoltage protection ±30 V
DC
, 50 V
PEAK
(100 ms)
Counter 4 counter channels; TTL input; shared with digital inputs
Counter modes
– Waveform timing
– Sensor modes
– Event counting
Period, frequency, pulse width duty cycle and edge separation
Encoder (angle and linear)
Basic event count. gated count., up/down count. and encoder mode (X1, X2 and X4)
Counter resolution 32-bit
Counter time base 100 MHz
Time base accuracy Typ. 2 ppm; max. 10 ppm
Max. input frequency 10 MHz
Sensor power supply 12 V (600 mA)
Digit
al OUT
Digital output 4 DO; TTL
Output indication LED (green = high; off = low)
Maximum current 25 mA continuously
Power-on default Low
Connector D-SUB-25 socket
Tab. 3: Digital I/O connector specifications